/* 背景图片 */
.icon {
    width: 15px;
    height: 15px;
  }
  
  .bg {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    background-image: url(../images/back.png);
    background-size: 100%;
    background-position: center;
  }
  
  /* 登录页面的头部 */
  header {
    height: 120px;
    position: relative;
  }
  
  header .logo {
    position: absolute;
    left: 70px;
    width: 150px;
    height: 150px;
  }
  
  header h1 {
    text-align: center;
    line-height: 120px;
    font-size: 50px;
    font-weight: normal;
    color: #033887;
  }
  
  /* content 部分 */
  .content {
    /* position: fixed;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0; */
    display: flex;
    width: 1200px;
    height: 450px;
    margin: 0 auto;
    margin-top: 30px;
    background-image: url("../images/seagull.png");
    border-radius: 15px;
    box-shadow: 20px 20px 27px #b1caf2;
    background-size: 100% 100%;
  }
  
  .content .item {
    flex: 1 0 500px;
  }
  
  /* 登录说明居中 */
  .content-left {
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  .content-left .desc {
    width: 357px;
    color: #fff;
  }
  
  .content-left .desc h3 {
    line-height: 1.6em;
    font-size: 22px;
  }
  
  .content-left .desc p {
    line-height: 1.6em;
    font-size: 18px;
  }
  
  /* 右侧 */
  .content-right {
    padding: 15px 40px 20px 20px;
  }
  
  .content-right .tab-nav {
    display: flex;
    justify-content: space-around;
    font-size: 25px;
    color: #033887;
  }
  
  .tab-nav .tab-title {
    padding: 0px 10px;
    border-bottom: 2px solid transparent;
  }
  
  .tab-nav .tab-active {
    border-bottom: 5px solid #033887;
  }
  
  .tab-content {
    margin-top: 20px;
    padding: 15px 50px;
    background-image: url("../images/inp.png");
    background-size: 100% 100%;
    height: 360px;
  }
  
  form .title {
    text-align: center;
    font-size: 24px;
    color: #033887;
  }
  
  .form-group {
    position: relative;
    margin-top: 20px;
  }
  
  .form-group .span-img {
    position: absolute;
    width: 25px;
    height: 25px;
    background-color: #033887;
    text-align: center;
    line-height: 30px;
    margin-top: 2.5px;
    margin-left: 1.5px
  }
  
  .span-img{
    vertical-align: middle;
    /* 图片垂直居中*/
  }
  
  .form-group .focus-border {
    width: 100%;
    height: 30px;
    border: 1px solid #e0eff9;
    background-color: #a0d5de;
    padding-left: 40px;
  }
  
  .focus-border:focus {
    outline: 2px solid #50eded;
  }
  .do-extra{
    display: flex;
    justify-content: space-around ;
  }
  .do-extra a{
    text-decoration: none;
    color: #222;
  }
  [type="checkbox"]{
    vertical-align: middle;
  }
  .rem-me{
    font-size: 16px;
  }
  .btn{
    width: 100%;
    margin-top: 10px;
    background-color: #033887;
    padding: 15px 0;
    font-size: 22px;
    color: white;
    border: none;
    border-radius: 7px;
    box-shadow: 3px 3px 10px #444;
  }
  footer{
    margin-top:80px;
    display: flex;
    justify-content: space-between;
    line-height: 50px;
    color: #033887;
  }
  footer .back{
    margin-left: 130px;
    font-size: 20px;
  }
  footer .back img{
    width: 20px;
    height: 20px;
  }
  footer .slogan{
    font-size: 36px;
    margin-right: 70px;
  }
  .form-group .focus-VerificationCode {
    width: 100%;
    height: 30px;
    border: 1px solid #e0eff9;
    background-color: #a0d5de;
    padding-left: 10px;
  }
  .form-group .get-VerificationCode {
    position: absolute;
    width: 100px;
    height: 30px;
    background-color: #033887;
    text-align: center;
    line-height: 30px;
    left: 341px;
    color:white;
    
  }